Find the value of a and b in the function f(x)=ab^x, if f(-1)=15 and f(2)=5/9

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter4: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 3CC: If xis large, which function grows faster, f(x)=2x or g(x)=x2?
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Find the value of a and b in the function f(x)=ab^x, if f(-1)=15 and f(2)=5/9.

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